Leer.



J. GOODMAN.

LEEB.

APPLICATION FILED JULY 5, 1901.

PATENTBD MAY 2, 1905.

3 SHEETS-SHEET l.

PATBNTED MAY 2, 1905.

J. GOODMAN LEER.

APPLICATION FILED JULY 5. 1901.

3 SHEETS-SHEET 2,

PATENTED MAY 2, 1905.

J GOODMAN.

3 SHEETS-SHEET 3.

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Patented May 2, 1905.

PATENT OFFICE.

JOSEPH GOODMAN, OF PITTSBURG, PENNSYLVANIA.

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SPECIFICATION forming part of Letters Patent No. 788,640, dated May 2, 1905. Application filed July 5, 1901. Serial No. 67,088.

1'0 all whom it may concern:

Be it known that I, Josnrn GOODMAN, a citizen of the United States of America, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Leers, of which the following is a specification, reference being had to the accompanying drawings, which form a part of this specification, in which- My invention relates to improvements in glass-annealing leers, and particularly to the construction of the lifting-bars and mechanism to elevate the same; also, to means for alining or vertically adjusting the lifting-bars.

The objects of my invention are, first, the production of means for quickly and uniformly adjusting vertically the lifting-bars for the purpose of maintaining the bed-bars carried thereon in a perfect horizontal plane, and, secondly, the production of aflat liftingbar instead of the round shafting heretofore used for this purpose, which enables the brackets to be secured thereto quickly and accurately and with much less difficulty than has been required to mount the sheaves heretofore used in connection with round liftingbars. a

To accomplish these objects, my invention consists in the novel construction and arrangement of parts hereinafter described, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 indicatesa longitudinal elevation, partly in section, of a glass-annealing leer suflicient to show the application of my im provement thereto. Fig. 2 is a horizontal section on line22of Fig. 1. Fig. 3 isacrosssection on line 3 3 of Figs. 1 and 2. Fig. 4: is an enlarged detail view of one end of the lifting-bars and of the bracket. Fig. 5 is an enlarged detail view showing side elevation of one of the bed-bars and the bracket, the lifting-bar being shown in section. Fig. 6 is a side elevation of one of the sheave-chairs and a portion of a bar supported thereby. Fig. 7 is an end view of the same. Fig. 8 is an enlarged detail View of the lever and adjusting washer and nut. Fig. 9 is a plan View of thelever. Fig. 10 is an enlarged side elevation of a leer having the form of liftingbar mechanism of Figs. 8 and 9.

Like reference characters indicate like parts wherever they occur throughout the several views.

Referring to said drawings, 1 is a long tunnel or leer adapted to be connected with a flattening-furnace. (Not shown.) The said tunnel or leer and its connected furnace is of the usual'construction for flattening and annealing window or plate glass and need not, therefore, be more fully described.

2 and '3 are two separate series of bars or rods extending longitudinally of the leer and are for the purpose of supporting the glass and carrying the same through the leer. The bed-bars 2 are sup-ported in brackets 4, which are mounted on the lifting-bars 5, which extend transversely of the leer at intervals the length thereof. These brackets and their lifting-bars are one of the novel features of my invention. The lifting-bars are constructed of flat commercial bars, the ends of the same having recesses a, which are adapted to be seated in the bar supports or holders 6, which operate in guides I), secured in the vertical boxes 7, arranged at intervals on the exterior of theleer, the bars extending from side to side of the leer, as shown in the drawings, and the side walls of the leer having narrow openings c communicating with the vertical boxes 7, through which the ends of said bars project into said boxes. The said bracket 4 comprises the stirrup (Z, adapted to receive the lower edge of the bed-bars, and a lower portion 6, provided with a recess f, corresponding in depth with the thickness of the liftingbars, which are adapted to be seated and secured therein by the bed-plate g, which is bolted or otherwise suitably secured to the bracket at a point above and below the upper and lower edge of the lifting-bars. The lifting-bar holders are connected to the ends of chains or ropes 30, which pass over pulleys 31 and are provided with counterweights 32. The lower ends of said lifting-bar holders 6 are connected to links 33, which in turn are connected with the outer end of the horizontally-disposed members or arms 3a of the bellcranks, the vertically-disposed members 35 of which are connected to the lower horizontallynected at their opposite ends to the cranks 39,

secured upon the transverse shaft 16, the ends of which are supported in bearin gs 'lc, formed in the standard 17 and the side wall of the leer, respectively. A large gear-wheel 18 is mounted on one end of said shaft 16 and meshes with and receives motion from a small gearwheel 19, which is mounted on the inner end of the shaft 20. The said shaft 20 is supported in bearings m, m, and a, formed in the standards 21, 21, and 22, and has mounted thereon a gear-wheel 23, which meshes with and receives motion from a worm-shaft 24. The said worm-shaft is journaled in bearings 25 p q and may be driven by any suitable motor 25. The pulling-out bars 3 are supported on sheaves 26, which are mounted in chairs 27, arranged upon the supports 28, which extend transversely of the leer at intervals the length thereof, the said sheaves being adapted to travel backward and forward on their spindles 29 on the side walls of said chairs 27 in either direction, dependent upon the direction in which the pulling-out bars are moved. An indicator-finger s is rigidly connected to the exterior hub of the large gear-wheel 18 and projects vertically therefrom for the purpose of indicating upon a dial or indicator t on the exterior of the leer the extent and direction in which the bed-bars 2 and lifting-bars 5 have been raised or lowered.

In the form of lifting-bar mechanism shown in Figs. 8, 9, and 10 the lifting-bar holders 6 are connected to the lower ends of verticallydisposed rods 8, the upper ends of which are provided with a screw-thread of considerable length, on which the adjusting cone-shaped washer 9 and nut 9 are mounted and by means of which the lifting-bars may be adjusted vertically quickly and without difi lculty to position them and the bed-bars at the desired height normally. The adjusting-washer 9, which is in the form of an inverted cone the conical end of which rests in a curved recess in the lever 10, said levers 10 being mounted in brackets 11 on the exterior of the leer, is provided with an orifice through which the upper end of the rod 8 projects and is held therein by the nut 9", secured upon the upper threaded end of said rod. The contact with the lever is comparatively small, and thelifting-bar holders 6, to which the lower ends of the rods 8 are connected,are readily adjusted by the manipulation of said nut and washer. The said levers 10 are arranged on both sides of the leerat correspondingintervals with the liftingbars, and adjustable counterweights 14 are provided on said levers, which take the place of the counterweights 32. The connections between the lifting-bar holders 6 and the rods 36 are the same as heretofore described, and these connections are operated by rods 38 and gearing and a motor, as heretofore set forth.

The advantages of my improvements are: By the use of my adjusting cone shaped washer and nut I am enabled to quickly and uniformly adjust and maintain when adjusted all the lifting-bars in perfect horizontal alinement, and thus maintain the bed-bars supported on the brackets mounted on the liftingbars in a perfect horizontal plane. The lower edge of the washer 9 holds the rod in a perfect vertical alinement at all adjustments. Another advantage of my improvement is that the lifting-bars are of flat commercial bars instead of round shafting, as heretofore employed, and the brackets can be quickly and accurately secured thereto with much less difficulty than has been required to mount the sheaves upon the round liftingbars heretofore used.

Having described my invention, what I claim, and desire to secure by Letters Patent,

1. In a glass-annealing leer, the combination with a vertically-movable lifting-bed for the glass, of means for adjusting the bed at different points to render it horizontal, and independent means for raising and lowering the bed.

2. In a glass-annealing leer, a lifting-bed for the glass comprising flat transversely-disposed lifting bars, longitudinally disposed bed-bars, and brackets having a stirrup to engage and support the bed-bars and a detachable bed -plate engaging the lifting bars, whereby the bed-bars are supported above the lifting-bars.

3. In a'glass-annealing leer, a lifting-bed comprising bed-bars and transverse liftingbars sustaining the bed-bars, supports on the leer, vertically-disposed rods connected to the lifting-bars, and adjustable devices on the rods adapted to bear against the supports and whereby the lifting-bed can be adjusted.

4. In a glass-annealing leer, the combination with a lifting-bed composed of bed-bars and transverse lifting-bars, of weighted levers pivoted to the leer at different points, vertically-disposed rods connected to the lift ing-bars and extending freely through the levers, coned washers on the rods which bear against the levers and are adjustable on the rods, whereby the lifting-bed can be adjusted, and counterweights on the levers.

5. In a glass-annealing leer, the combination with vertical boxes on the leer, of guides fixed my signature in the presence of two submovable therein, a lifting-bed for the glass scribing witnesses.

which has transverse liftin -bars provided with notches for engaging the guides, and JOSEPH GOODMAN 5 means for raising and lowering the lifting- Witnesses:

bed. CLARENCE A. WILLIAMS,

In testimony whereof I have hereunto af- JOHN H. RONEY. 

